Multiple certificate handling improvements #950

Job	Run time
f41 x64 build compile_commands.json	2m 49s
f41 x64 build	2m 20s
f41 aa64 cross-build	3m 17s
f40 x64 build	2m 7s
f40 aa64 cross-build	2m 8s
f39 x64 build	2m 7s
f41 arm cross-build	2m 7s
centos9 x64 build	1m 5s
f40 arm cross-build	1m 59s
centos8 x64 build	1m 12s
f39 arm cross-build	2m 6s
f39 ia32 build	1m 58s
f41 x64 cross-build	2m 24s
centos8 ia32 build	1m 20s
f40 x64 cross-build	2m 10s
f39 x64 cross-build	2m 1s
f41 ia32 cross-build	2m 12s
f40 ia32 cross-build	2m 20s
f39 ia32 cross-build	2m 5s
	39m 47s

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